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Solve algebraically the simultaneous equations: x^2+y^2 = 25 and y-3x=13

To answer this question, we need to make y the subject of the second equation. We can do this through simple rearrangement: y-3x=13 so y=13+3x Now that we have y on its own, this means we can substitute for ...
JK
Answered by James K. • Maths tutor
8970 Views

How do I add contextual knowledge about the text into my answers?

Contextual knowledge includes all kinds of things that give a background of the text, for example why it was written, what belief system it is situated in, what historical events influenced the writer. The p...
JC
Answered by Jim C. • English tutor
13346 Views

How should I develop a point/paragraph in a source essay?

You can remember how to do this with the acronym TCP OK; T is for tone, where you discuss the expression in the source- is it biased towards a certain side, or trying to persuade? C stands for content, where...
ER
Answered by Ellie R. • History tutor
2835 Views

Find the intercept between the two equations below?

y = 2x+5 y=x+1 First equate: 2x+5=x+1 Rearrage for x: 2x-x=1-5 Which gives: x=-4
HS
Answered by Harry S. • Maths tutor
3407 Views

How do you work out the surface area of a cylinder?

Okay so to work out the surface area of any 3D shape, you should look at the area of every surface on the shape individually. I would then draw a cylinder. First, we can work out the area of this circle ( I ...
ON
Answered by Ollie N. • Maths tutor
4458 Views